# SDR DXTA2020113004398

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 26, 2020
- Submitted: December 3, 2020
- Operation: Air carrier
- Aircraft: [N340QS](https://openairdocs.org/aircraft/N340QS), registered now
- Make and model: Emb EMB-505
- Registry model: [EMB EMB-505](https://openairdocs.org/model/embraer-executive-emb-505) (OpenAirDocs)
- Aircraft serial: 50500189
- Aircraft time: 5,180 hours, 4,148 cycles
- System (JASC): [3350 · Emergency Lighting](https://openairdocs.org/jasc/3350)
- Part: Battery
- Part number: 6450LS00
- Part serial: 001127
- Condition: Defective
- Location: Emergency Lights
- Stage of operation: CR
- How discovered: O
- Nature of condition: O
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DXTA2020113004398

## Discrepancy

DURING CRUISE FLIGHT THE CABIN EMERGENCY LIGHTS ILLUMINATED WITHOUT BEING COMMANDED BY THE SWITCH POSITION.  REMOVED FAULTY EMERGENCY BATTERY NR 1 FWD PN:6450LS-00 SN:002618 AND INSTALLED MODIFIED EMERGENCY BATTERY PN:650LS-00 SN:001127.  REMOVED NR 2 AFT PN: 6450LS-00 SN:001130.  PERFORMED OPERATIONAL CHECK OF EMERGENCY BATTERY AND LIGHTS.  OPERATIONS CHECK GOOD.  WORK DONE IAW EMB-505 AMM 33-52-01.

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